Fuel feed device for oil burners



Dec. 27, 1949 A. H.--'BERGER 2,492516 FUEL FEED DEVICE FOR OIL BURNERS Filed Dec. 22, 1945 2l if@ z5 Rigi es' FIJ@ 4 INVENTR.

BY www Patented Dec. 27, 1949 MLBURNERS Ohio, la` 'corporationl of 'Ohio 'Kpplic'atonDmlZZ, 1945, Serial No. 636,623

lfClaim. (Cl. 1558-2874) burner.

bur-n'i' "dnec'hanism @of simple and sturdy construction, the parts being economically manufacturable fromireadily-available materials.

Other-objects and Yadvantages will Abe apparent from a study of the following description-in `conjunction With the accompanying drawings in which:

Fig..1is a view in front elevation of a fragmentaryrportion of an oil stove embodying my-invention; A K 4 2 `is-anfenlarged sectionalview taken from thgyplane 2*-,21 of Fie. 1;..

-Figisa detail viewvof a portionof theapparas tus shown in Fig. 2; and shown in modified form;

Fig. 4 is a sectional 'view taken `from the plane 4 4 of Fig 3;

the invention obviously may take various forms. 30

It also is to be understood that the phraseology or terminology herein employed is for the purpose of description and not of limitation, the scope of the present invention being defined in the appended claim.

Speaking first generally, with reference to Fig. 85

1, I show a fragmentary portion of a stove, designed for liquid fuel consumption, such fuel being hereinafter identified by the term oil The stove may rest on any suitable support (not here 40 shown) such as a utility cabinet or conventional legs. The stove includes top, bottom, and side members, herein identified by reference characters I2, I3 and I4 respectively. The stove further includes an oil level bowl I5, an oil container I6, 45

a burner I1, and an oil supply pipe I8 for maintaining liquid communication between the oil level bowl and the burner. Oil feed to the burner is controlled by valve means under control of a manually operatable knob I9. It will be undero stood by those familiar with stoves of this character that a fixed oil level is automatically maintained in bowl I5 at or about the dotted line L by a liquid seal arrangement not here necessary The special 'and novel "ccnstrcticn 'ff the burner and associatedfuel 'feedafdcor'itrl `ilaiss will now be described.

'Thebulller base `20"'nay" vbe 'pressed ``r drawn from' a circular 'sheet metal blank. "It ha'sagener'ally nal-,central portion 21' and' a nepenigannular channel or trough 22 which is'ada'pte'dto holdpu up to ia level established byetneco'r-esp'ondinglev'el in the bowl T5. "'Il'eup'tvar'dlyfextending 'walls ofthe trough22ar-e utffturnedat 23 T'to-"provide a pair `f Horizontal annuiarshlders which support a chimney arrangement 24,-3a's indicated in dotted line in Fig.'1'. "'Ittill b'e understood that an annular Wickie eariedintrough 22 and that the lower ed'gef the wicks "iinmersedv in the fuel oil. 'The illisconveyed'fifm supply-pipe I 8 to trough22 as follows. Referring especiauy to Figs. "2 and 3, atuinman"ncusingiit has A'a plug'26 inserted in" the 'eiid thereof, lrlfer-I ab1y, and mostccnveniently, by means'ci Y res's t. The plugis providedwitha longitudinal bore 2'1. 'frire 'cuter end -of the"piugetends'sligntry' beyond the end of the housing, and is reduced in size at 28 to have a forced t in an aperture 29 in the side of fuel pipe I8. The inner end of the wall of bore 21 is threaded to receive a complementary external thread on a needle valve stem 30 of a valve manipulating rod 30a. A valve needle 3l on the inner end of the valve stem cooperates with a valve seat 32 carried by the Wall of bore 21. It will be apparent that rotary motion of knob I9 either establishes or interrupts communication between fuel pipe I8 and bore 21.

Burner I1 is placed in liquid communication with bore 21 as follows: A transverse groove 33 is cut in the wall of housing 25, and extends part Way into the annular wall of plug 26. Preferably the groove conforms generally in contour with the bottom wall of the burner base, so that the said bottom wall may be nested in the groove. A permanent assembly is assured by brazing adjacent wall portions of trough and housing, as indicated at 35'in Fig. 2, thereby effecting a leakproof connection. The lower trough wall, and the plug 26 are pierced at 36 so as to permit oil to flow upwardly into trough 22 when the valve is open. A brazed connection at 31 is also established at the location where the housing 25 abuts against fuel pipe I 8. The reduced diameter portion 28 provides a shoulder, and as shown in Fig. 2, the end of the tubular housing 25 is turned inwardly over the shoulder so that the end of the tubular to describe or show, and that when the burner is housing 25 abuts the fuel pipe I8 as stated; or

if preferred, as n Fig. 3, the end of the tubular housing is not turned inwardly. The upwardly inclined position of housing 25 has been established as most convenient from the standpoint of assembly and manipulation, but of course the housing can be disposed horizontally or even downwardly, provided that the valve stem be suitably packed to prevent oil leakage. No leakage is possible as long as the upward inclination places the upper end of housing 25 above the prevailing oil level. It will be understood that the weight of the burner, wick and chimney, not shown, will be supported on housing 25, by the brazed connection 35. This is rendered possible by the light sheet metal construction of the burner and chimney.

The advantages of the above described novel structure will now be apparent. The burner itself can be drawn from a single blank of sheet metal. The housing 25, plug 26, and valve stem 30 are all made from readily available materials. 'Ihe housing and stem can be formed from cold rolled steel. For the plug 26, I prefer a cuprous alloy such as brass. The brazing operation gives a more rm and reliable union than' does soldering, and a brazed joint is not so susceptible to failure from a possible rise in temperature, or from other causes.

Other novel features of construction of those portions of the oil stove herein disclosed are covered by my copending applications, Serial Numbers 636,625; 636,626; 636,627; led concurrently herewith.

What I claim is:

In an oil burner and associated structure of the class described, a burner base having an upwardly open wick trough; a fuel supply pipe having a portion below the trough and provided with a circular aperture through a side thereof; a valve housing in the form of a piece of tube open at an end thereof; the open end of the tube abutting directly upon the side of the fuel pipe portion, and extending therefrom in an upwardly inclined direction; an elongated plug telescoped into the tube interior and provided with a cylindrical end portion of reduced diameter, projecting from the said end of the tube and having a press it in the circular aperture of the fuel pipe; the end of the tube sealingly joined to the side of the pipe where it abuts thereonj the plug having a bore therethrough opening at one end through its cylindri cal end portion into the fuel pipe, and outwardly thereof being of enlarged diameter to provide a valve seat; a rod-like needle valve having a stem threaded in the enlarged diameter portion of the plug bore, and an elongated valve needle extending therefrom toward the valve seat, and the valve stem extending outwardly through and beyond the other end of the tube and provided with a handle for rotating the stem to screwingly move the valve needle toward and from the valve seat; an upwardly open transverse groove in the upper side of the tube and the side of the plug therein; the underside of the wick trough being disposed in the groove and sealingly joined to the wall ofv the groove; an oil duct communicating between the wick trough and the plug bore at a point opposite to the elongated valve needle. ALBERT H. BERGER.

REFERENCES CITED The following references are of record in the le of this patent:

UNITED STATES PATENTS l Date 

